Isooctane

Basic Information of Isooctane

Isooctane (CAS No. 540-84-1) is a colorless, highly flammable liquid with a characteristic gasoline-like odor. It's the benchmark for high-octane performance in fuels, famously assigned an octane rating of 100, making it indispensable in the petroleum industry and beyond.

CAS No.:	540-84-1
EC No.:	208-759-1
Linear Formula:	C₈H₁₈
Molecular Weight:	114.23
Appearance:	Transparent Liquid
Melting Point:	-107 °C
Density:	0.692 g/mL at 25 °C(lit.)
RIDADR:	UN 1262 3/PG 2
Chemical Structure:

Key Applications of Isooctane (2,2,4-Trimethylpentane)

Isooctane is a highly defined branched hydrocarbon widely used as a reference fuel component and high-purity non-polar solvent in laboratory and industrial environments. For a broader overview of hydrocarbon materials and industrial roles, refer to our industrial hydrocarbons guide.

• Octane Rating Reference Standard: Isooctane defines the 100-point reference in the global octane rating scale and is used together with n-heptane (rated 0) to determine the anti-knock performance of gasoline and aviation fuels.

• High-Purity Solvent: An effective non-polar solvent for selected chemical reactions, purification workflows, and analytical procedures including chromatography. For solvent selection context, see hydrocarbon solvents for industrial cleaning and extraction.

• Fuel Blend Component: Used as a blending component in premium gasoline and aviation fuels (such as Avgas) to improve octane performance and combustion stability.

• Chemical Intermediate: Serves as a building block in the preparation of selected specialty chemicals and fuel additives.

• Calibration and Analytical Chemistry: Utilized as a reference material in gas chromatography and related analytical techniques requiring well-defined hydrocarbon standards.

For structured guidance on choosing the appropriate hydrocarbon solvent for industrial use, review our hydrocarbon solvent selection guide.

• Reliable Global Logistics: Our extensive network ensures efficient and secure delivery of Isooctane to your facilities worldwide, in full compliance with international shipping regulations.

• Commitment to Safety: We adhere to the highest safety standards for handling, storage, and transportation of this flammable liquid, providing complete Safety Data Sheets (SDS) and necessary dangerous goods documentation.

• Dedicated Customer Support: Our knowledgeable team is ready to provide technical insights and assist with your ordering and logistical requirements.

Hazards Classification

• GHS Classification: Flammable Liquid (GHS02), Health Hazard (GHS08), Environmental Hazard (GHS09)

• Hazard Statements: Highly flammable liquid and vapor; may be fatal if swallowed and enters airways; causes skin irritation; may cause drowsiness or dizziness; very toxic to aquatic life with long lasting effects.

• UN Number: UN 1262

• Hazard Class: 3 (Flammable Liquids)

• Packing Group: II